Rohm and Haas Company

Peter G Cartier

Paul E Ellis, Jr

Peter Osei-Gyimah

Glenn H Beasley

Good salt rejection, flux characteristics and resistance to degradation are obtained with semi-permeable reverse osmosis membranes made by coating a microporous substrate with a copolymer of a hydroxy containing methacrylic ester and methacrylic acid, and cross-linking the copolymer subsequent to deposition on the substrate.

Reverse osmosis membranes based on hydroxyalkyl methacrylate and

Impure sugar solutions containing charged particulate impurities are treated with strongly basic emulsion anion exchange resin particles to form flocs of the charged particulate impurities and the resin particles. These flocs remove dissolved ionic impurities because of their ion exchange functionality, and also remove color-imparting impurities.

Purification of sugars using emulsion anion exchange resins

Sulfur dioxide and sulfur trioxide may be removed from gases over a broad range of temperature and moisture conditions by utilizing a class of resinous adsorbents which retain their capacity at low moisture levels. Preferred embodiments are those resins which may be thermally regenerated to recover the sulfur.

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Glenside, PA, United States of America

Peter G Cartier